Add instruments

[BankRobber]

I need to add around 30 instruments to the indicator.
I must know if some of the instruments are non existent on the broker side.
For example NZDCAD doesn't exist on Interactive brokers.
Is there any way to check this On Startup(), for example by checking the instrument name, but i have to perform this check on all 30 instruments, because my calculations depend on a number of added instruments

[NinjaTrader_Bertrand]

BankRobber, you unfortunately not check if these instruments are available from your specifc broker - instruments Add()ed would need to be in NT's database though for the command to work without reporting an error back.